Rusty rag

Using used toilet paper. The skid marks on the paper making the tissue look "rusty."

Mostly used in a masturbating with used toilet paper due to scat fetish kind of context, but can be used for any other example

Man, I couldn't find a cloth so I had to clean my windows with a rusty rag!

rag shit

Worse than 'rat shit'. Rag shit is when something is so bad it's genuinely offensive. As if someone has taken a shit on a rag and wiped it across your face.

Donald Trump looks like rag shit

Hoe rag

Something or someone absolutely terrible. You hate it and it probably makes you sick of how bad it is. It could be a person or an object/animal

Girl1: eww my bf is being such a hoe rag he hasn’t responded to me

Girl2: dang I’m sorry babes

Or you could say something like

Girl 1: I hate these jeans they’re so hoe rag

trick rags

A ho's wardrobe. Any clothes a hooker uses to advertise her wares.

Candy's tawdry trick rags....and body... look so '70's. She needs a complete update, but she ain't gonna get it.

crack rag

The cloth you use to wipe seminal fluid from the vagina and/or other orifice in the body.

Girlfriend: Hey can you hand me my Crack Rag, you creampied me and I don't wanna get it in my panties.

rizz rag

A rag used for inducing sleep when there is a lack of rizz, often doused in chloroform.

Did you hear about Jimmy? He used a rizz rag on a girl at the bar.

drag rag

The Mexican ponchos worn by stoners

Bro, I like your drag rag! Now pass me the joint.